The national average of $3.36 is two pennies cheaper than a week earlier.

"The national average has seen the pace of decline slow quite a bit in the last few days," said GasBuddy.com Senior Petroleum Analyst Patrick DeHaan.

"While gasoline prices continue to drop at a slow pace, they remain a whopping 40-cents per gallon under prices a year ago", DeHaan said.

"With the Fed shutdown continuing, we also will be seeing less data made available this week as it is the first week that we're not expecting the government to release a weekly report on changes in supply and demand, meaning traders will be somewhat blinded when it comes to trading futures, which could add to volatility," DeHaan said.